Tb Woods TB-7S118* Sure-flex Sleeve Coupling Flange

Product Description

The TB WOODS TB-7S118* is a Type-S flange hub sleeve coupling flange designed for power transmission applications in motors, pumps, compressors, blowers, mixers, and conveyors. This coupling size 7 flange is machined from cast iron with a fixed round keyed bore of 1.125 inches and a hub diameter of 2.8125 inches. It handles a maximum torque of 940 inch-pounds and a maximum speed of 5,250 RPM. The 4-way flexing action of the Sure-Flex sleeve system absorbs shock, angular and parallel misalignment, end float, and vibration. Licensed HVAC and mechanical contractors, millwrights, and industrial technicians install this flange as part of a complete Sure-Flex coupling assembly.

This sleeve coupling flange is suited for close-coupled drive arrangements in both light commercial and industrial settings. Typical applications include motor-to-pump drives, compressor drives, conveyor head shafts, and blower or mixer shafts. The Type-S close-coupled body style keeps shaft-to-shaft spacing tight. The flange accommodates angular misalignment up to 0.25 degrees with Hytrel sleeves and up to 1 degree with EPDM or Neoprene sleeves. No bushing is required for installation on a 1.125-inch shaft. Two set screws are included, positioned one over the keyseat and one at 90 degrees.

Key Features

• Cast iron hub provides strength and durability in demanding drive applications
• Fixed bore of 1.125 inches with a 1/4 inch by 1/8 inch keyway for positive torque transfer
• Maximum torque rating of 940 inch-pounds and maximum speed of 5,250 RPM
• Type-S flange close-coupled body style minimizes shaft separation distance
• Handles both angular and parallel misalignment; compatible with Hytrel, EPDM, and Neoprene sleeves
• Chemical resistant and oil resistant construction; includes two set screws for secure shaft retention

Compatibility

Designed for use in TB WOODS Sure-Flex coupling assemblies of size 7, this flange pairs with standard Sure-Flex sleeves in Hytrel, EPDM, or Neoprene materials. Suitable for motor, pump, compressor, blower, mixer, and conveyor drive applications requiring a size 7 Type-S fixed-bore flange hub.

Installation Notes

Installation is performed by qualified mechanical technicians or millwrights. De-energize and lock out all power to the drive system before mounting or removing coupling components per OSHA lockout/tagout procedures. Verify shaft diameter and keyway dimensions match the bore and keyseat size before installation. Do not operate the coupling without the appropriate Sure-Flex sleeve seated between the two flanges.

Technical Specifications

• Coupling Size: 7
• Maximum Torque: 940 inch-pounds
• Maximum Speed: 5,250 RPM
• Bore Diameter: 1.125 inches
• Bore Type: Round Keyed (Fixed Bore)
• Bore Tolerance: +0.0005 inches / +0.0015 inches
• Outside Diameter: 4.625 inches
• Hub Diameter: 2.8125 inches
• Hub Body Length: 1 inch
• Length Through Bore: 1.84 inches
• Keyway Size: 1/4 inch wide x 1/8 inch deep
• Screw Thread Size: 5/16 inch-18
• Included Screws: 2 set screws
• Set Screw Location: One over keyseat and one at 90 degrees
• Max Angular Misalignment: 0.25 degrees (Hytrel sleeves), 1 degree (EPDM and Neoprene sleeves)
• Hub Material: Cast Iron
• Body Style: Type-S Flange Close Coupled
• Resistance Properties: Chemical Resistant, Oil Resistant
• Weight: 2.6 pounds
• Country of Origin: Mexico

Standard Information

• Brand: TB WOODS
• Manufacturer Part Number: TB-7S118*